System and method for percutaneously administering reduced pressure treatment using a flowable manifold
View Patent ↗A reduced pressure delivery system for applying a reduced pressure to a tissue site includes a manifold delivery tube having a passageway and a distal end, the distal end configured to be percutaneously inserted and placed adjacent the tissue site. A flowable material is provided and is percutaneously deliverable through the manifold delivery tube to the tissue site. The flowable material is capable of filling a void adjacent the tissue site to create a manifold having a plurality of flow channels in fluid communication with the tissue site. A reduced pressure delivery tube is provided that is capable of fluid communication with the flow channels of the manifold.
1. A method of administering a reduced pressure therapy to a tissue site comprising:
percutaneously positioning a distal end of a manifold delivery tube adjacent a tissue site;
percutaneously delivering a flowable material through the manifold delivery tube to the tissue site, the flowable material being capable of filling a void adjacent the tissue site to create a manifold having a plurality of flow channels in fluid communication with the tissue site;
applying a reduced pressure to the tissue site through the manifold delivery tube and the flow channels of the manifold.
2. The method according to claim 1 , wherein the manifold is bioresorbable.
3. The method according to claim 1 , wherein the manifold serves as a scaffold for tissue growth.
4. The method according to claim 1 , wherein the manifold foams and undergoes a phase change in the presence of at least one of a bodily fluid and a bodily temperature.
5. The method according to claim 4 , wherein the manifold is a gel.
6. The method according to claim 1 , wherein the manifold further comprises a bioresorbable polymer dissolved in a solvent and mixed with sodium bicarbonate and citric acid.
7. The method according to claim 6 , wherein the bioresorbable polymer is one of a polylactide-co-glycolide (PLAGA) polymer and a polyethylene glycol-PLAGA copolymer.
8. The method according to claim 6 , wherein the solvent is methylene chloride.
9. The method according to claim 1 , wherein the flowable material is selected from the group consisting of a liquid, a slurry, a suspension, a viscous gel, a paste, a putty, and particulate solids.
10. The method according to claim 1 , wherein:
the flowable material undergoes a phase change in the presence of at least one of a bodily fluid and a bodily temperature; and
the flowable material includes a poragen that dissolves following curing of the flowable material, the dissolution of the poragen creating the plurality of flow channels.
11. The method according to claim 1 , wherein the flowable material includes microspheres having a coating that is capable of being selectively crosslinked following delivery of the flowable material to the tissue site.
12. The method according to claim 11 , wherein the coating is selectively crosslinked in response to at least one of heat, light, and a chemical.
13. The method according to claim 11 , wherein the microspheres following crosslinking create the plurality of flow channels.
14. The method according to claim 1 , wherein:
the flowable material is selected from the group consisting of a paste and a putty having an initial viscosity;
the viscosity of the flowable material decreases below the initial viscosity in the presence of shear forces during delivery to the tissue site; and
the viscosity of the flowable material reverts to the initial viscosity following delivery of the flowable material to the tissue site.
15. A method of delivering reduced pressure to a tissue site comprising:
inserting a delivery tube percutaneously to a void in the tissue site;
delivering a material through the delivery tube to the void;
forming flow channels in situ in the material; and
delivering a reduced pressure to the tissue site through the delivery tube and the flow channels.
16. The method of claim 15 , wherein forming the flow channels comprises hardening the material in the void into a solid state.
17. The method of claim 15 , wherein forming the flow channels comprises forming a foam from the material in the void.
18. The method of claim 15 , wherein forming the flow channels comprises dissolving poragens in the material.
19. The method of claim 15 , wherein forming the flow channels comprises dissolving sodium chloride in the material.
20. A method of delivering reduced pressure to a tissue site, the method comprising:
percutaneously inserting a delivery tube adjacent a tissue site;
percutaneously delivering a flowable material through the delivery tube to a void adjacent to the tissue site, the flowable material adapted to create a manifold in the void having a plurality of flow channels in fluid communication with the tissue site;
applying a reduced pressure to the tissue site through the delivery tube and the flow channels of the manifold.